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astronomical object type
Instances
Quasar
Active galactic nucleus (AGN) containing a supermassive black hole
Binary star
System of two stars orbiting each other
Astrophysical X-ray source
Astronomical object emitting X-rays
Seyfert galaxy
Class of active galaxies with very bright nuclei
Asterism (astronomy)
Pattern of stars recognized on Earth's night sky
Post-AGB star
Type of luminous supergiant star
Cosmic dust
Dust floating in space
Dark nebula
Type of interstellar cloud that obscures visible light
Star cluster
Group of stars
Cepheid variable
Type of variable star that pulsates radially
Blazar
Very compact quasi-stellar radio source
Compact object
Classification in astronomy
Classical Kuiper belt object
Kuiper belt object, not controlled by an orbital resonance with Neptune
Classical Cepheid variable
Type of variable star
Sub-Neptune
Planet with a radius or mass smaller than Neptune
Massive compact halo object
Hypothetical form of dark matter in galactic halos
Magnetar
Type of neutron star with a strong magnetic field
Irregular moon
Captured satellite following an irregular orbit
near-infrared source
astronomical object that produces near-infrared light (λ < 10 µm)
Active galactic nucleus
Compact region at a galaxy's center with abnormally high luminosity
Molecular cloud
Type of interstellar cloud
Radio galaxy
Type of active galaxy that is very luminous at radio wavelengths
Globular cluster
Spherical collection of stars
high proper-motion star
total proper motion >= 50 mas/yr
Black hole
Astrophysical phenomenon
gamma-ray source
astronomical object type
group of stars
astronomical object type